style: please flake8

cube_doctor/__init__.py

@@ -597,7 +597,8 @@ class Command:
 
                                     traceback.print_exc()
                                     logger.error(
-                                        f"failed to mark MR {mr} on {cube.name} as merge_when_pipeline_succeeds"
+                                        f"failed to mark MR {mr} on {cube.name} as "
+                                        "merge_when_pipeline_succeeds"
                                     )
 
                         open("created_mr.log", "a").write(